1H NMR and spectroscopic studies of biologically active yttrium (III)-flavonoid complexes

被引：15

作者：

Ansari, Anees A. ^{[1
]}

机构：

[1] Natl Phys Lab, New Delhi, India

来源：

MAIN GROUP CHEMISTRY | 2008年 / 7卷 / 02期

关键词：

yttrium; quercetin; morin; naringenin; catechin; chrysin;

D O I：

10.1080/10241220802357139

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

The compounds, Y(L1-5)(3), [where L1-5 = quercetin (L1), morin (L2), naringenin (L3), catechin (L4) and chrysin (L5)] were prepared and characterized by elemental analysis, molar conductance, UV-Vis, thermogravimetric analysis (TGA), Fourier transform infrared (FTIR), and proton nuclear magnetic resonance (H-1 NMR) spectroscopic studies. Molar conductance showed that the complexes are non-electrolytic in nature. The complexes were anhydrous as revealed by the TGA analyses. The H-1 NMR spectra in DMSO-d(6) revealed a diamagnetic shift. The small chemical shift of the proton resonances suggested that the complexes are dissociated in DMSO solvent and the solvent is coordinated to the Y atoms.

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页码：133 / 145

页数：13

相关论文

共 37 条

[1]

Optical absorption and NMR spectroscopic studies on paramagnetic neodymium(III) complexes with β-diketone and heterocyclic amines -: The environment effect on 4f-4f hypersensitive transitions [J].

Ansari, A. A. ;

Irfanullah, M. ;

Iftikhar, K. .

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2007, 67 (05) :1178-1188

[2]

DFT and 1H NMR molecular spectroscopic studies on biologically anti-oxidant active paramagnetic lanthanide(III)-chrysin complexes [J].

Ansari, Anees A. .

MAIN GROUP CHEMISTRY, 2008, 7 (01) :43-56

[3]

The orientation of norfloxacin bound to double-stranded DNA [J].

Bailly, C ;

Colson, P ;

Houssier, C .

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1998, 243 (03) :844-848

[4]

Uses and properties of Citrus flavonoids [J].

Benavente-García, O ;

Castillo, J ;

Marin, FR ;

Ortuño, A ;

Del Río, JA .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1997, 45 (12) :4505-4515

[5]

Beverly A.T., 1990, CANCER RES, V50, P6971

[6]

Iron complexes of quercetin in aprotic medium. Redox chemistry and interaction with superoxide anion radical [J].

Bodini, ME ;

Copia, G ;

Tapia, R ;

Leighton, F ;

Herrera, L .

POLYHEDRON, 1999, 18 (17) :2233-2239

[7]

Zinc catechin complexes in aprotic medium. Redox chemistry and interaction with superoxide radical anion [J].

Bodini, ME ;

del Valle, MA ;

Tapia, R ;

Leighton, F ;

Berrios, P .

POLYHEDRON, 2001, 20 (9-10) :1005-1009

[8]

Antioxidant principles from Bauhinia tarapotensis [J].

Braca, A ;

De Tommasi, N ;

Di Bari, L ;

Pizza, C ;

Politi, M ;

Morelli, I .

JOURNAL OF NATURAL PRODUCTS, 2001, 64 (07) :892-895

[9]

Metal complexes of the flavonoid quercetin: antibacterial properties [J].

Bravo, A ;

Anacona, JR .

TRANSITION METAL CHEMISTRY, 2001, 26 (1-2) :20-23

[10]

Intracellular molecular interactions of antitumor drug amsacrine (m-AMSA) as revealed by surface-enhanced Raman spectroscopy [J].

Chourpa, I ;

Morjani, H ;

Riou, JF ;

Manfait, M .

FEBS LETTERS, 1996, 397 (01) :61-64

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